add roots logo, center badges, reword the intro paragraph a bit, add note about underscores
add roots logo, center badges, reword the intro paragraph a bit, add note about underscores

carrot/roots,jenius/roots,Leeds-eBooks/roots,argyleink/roots,smashingboxes/roots,i8ramin/roots,argyleink/roots,nporteschaikin/roots,jescalan/roots